Saddle for walking-beams



(No Model.)

D. H. BUMPUS.

SADDLE FOR WALKING BEAMS.

Patented July 3, 1888.

INVENTOR A WITNESES, a? 06, M W

'ilNrrnn STATES PATENT Orrtca.

DELOS BUMPUS, OF KNOX, PENNSYLVANIA.

SADDLE FOR WALKING BEAMS.

$PECIPICATION forming part of Letters Patent No. 385,542, dated July 3, 1888.

Application filed November 21, 1887. Serial No. 255,762. (Xomodold To all whom it may concern:

Be it known that I, DELos IrI. BUMPUs, a citizen of the United States, and a resident of Knox, in the county of Clarion and State of Pennsylvania, have invented certain new and useful Improvements in Saddles for alking- Beams; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which Figure 1 is a perspective view of my new and improved saddle for walking-beams. Fig. 2 is a detail view of the trough. Fig. 3 is a perspective detail view of the saddle-plate and roller. Fig. 4 is a side view of a slightly different or modified form of my invention, in which the roller is also constructed solid; and Fig. 5 is an end view of the said roller.

The same letters of reference indicate corresponding parts in all the figures.

My invention consists in a new and improved saddle for the walkingbeams of oilwells and for all other walking-beams; and my invention will be hereinafter fully described and claimed.

Referring to the several parts by letter, A indicates the supporting or samsonpost, as it is called, on which the walkingbeam is supported. To the upper end of this post are bolted, on each side thereof, the removable supportingplates B B, which are preferably formed with the strengthening-ribs B'on their outer sides, as shown. In the upper ends of these side supporting plates are formed the openings 0, having the straight bottoms and the inwardly-curved sides 0 G, and in these top openings, 0, lit and are supported the ends of the trough D.

D indicates the removable trough, which forms an important part of my invention. The opening or space E in the trough is semicircular in cross-section to fit the round rollerof the saddlcplate, which rests and turns in it, and this rounded space extends from end to end of the trough, the ends of the trough being closed by the end plates or ends D D. At each end the outer sides'of the trough are enlarged, and are recessed on their outer sides, these curved longitudinal recesses F F in the sides of the trough ends coinciding in their curvature with that of the sides 0 O of the openings 0 in the upper ends of the supporting-plates B B.

Upon the lower side of the trough is formed a longitudinal rib, G, which, when the trough is in its operative position, bears with its straight ends against the inner sides of the supporting-plates B B. The trough is secured in posit-ion by first bolting one of the plates B to its side of the upper end of the samsonpost A,when one recessed end of the trough is slipped in place in the opening C in the upper end of that plate B until that end of the bottom rib, G, of the trough comes in contact with the inner side of the plate B. The other plate 13 is then slipped over the other recessed end of the trough until its inner side comes in cont-act with that end of the rib G, when the plate is bolted to that side of the Samson-post, and the trough is-thus secured firmly and securely in its operative position; while if for any cause it is desired to remove the trough for repairs or for any other purpose, this can be readily done by unbolting and removing either one of the supporting-plates B and then slipping out the trough.

Hindicates the saddle-plate, which is formed perfectly flat on its upper side for the reception, to form a seat, of the walking-bea1n, and the walkingbeam is centrally secured upon this saddle-plate by means of bolts passing through the holes I, which are formed, as shown, along the edges or sides of this plate. The saddle-plate is formed or cast with the strengtheningribs J upon its lower side, and the roller K is cast integral with the saddleplate. This roller K is cast at the center of the under side of the saddle-plate, so as to ex tend transversely across the under side of the same, with its ends projecting beyond the sides of the plate. This roller is formed of This roller K may be formed solid, asshown in Figs. 4 and 5; but I prefer to cast or form it with a central longitudinal bore or opening, IV the advantage of this construction being that the said opening, which is open at both ends, will act as an oil-cup in this manner: WVhen the trough is secured in position on the top of the Samson-post, the roller K is placed in the trough and the walkingbeam securely bolted upon the saddle-plate II, the roller being so cured in position against the possibility of slipping or working out by the end clips, L L. It will now be seen that as the walking-beam is reciprocated it will turn on the central roller, K, which thus gives a bearing for its entire length, and this bearing is lubricated by pouring oil into the trough, so that the lubricatingoil covers the entire surface of the roller which plays within the trough, thus thoroughly and completely lubricating the bearing for its entire length, all of the bearing-surface of the roller being coated with a film of oil, the bearing-roller thus working in oil. Now, when the roller is formed hollow, a considerable quantity of oil can be poured into its longitudinal central opening after the roller has been placed in the trough, the open ends of the roller being more than half covered by the ends of the trough, the trough being of such depth that when the roller is placed in position in it more than one-half of the roller fits down within the trough, and it will be seen that this central longitudinal opening of the roller will serve somewhat as an oil-reservoir, as the oil will escape gradually from its open ends down into the troughto lubricate the bearing, and as the oil is gradually used and evaporates it will be automatically fed out from the ends of the roller-opening, so as to keep the bearing always lubricated and save time and trouble in oiling the bearing.

The upper longitudinal edges of the trough may be made perfectly straight, or they may be recessed at N when these spaces are needed for the strengthening-ribs J on the lower side of the saddle-plate, leaving spaces for the said ribs to enter as the beam swings far down.

Instead of the single straight rib G on the bottom of the trough, the trough may have cast or attached to its bottom the two projecting ribs 0 0 near its ends, the outer ends of which ribs project out and down, as shown, and inwardly-projecting lugs or ribs P P are in th s case formed on the inner sides of the supporting-plates B B, which, when the removable trough is placed in position,will extend within the outer ends of the trough-ribs O O,as shown in Fig. 4 of the drawings, and thus prevent the trough from slipping out of position,wh1le at the same time the trough can be readily removed when required by removing either one of the supporting-plates B.

From the foregoing description,taken in counection with the accompanying drawings, the construction, operation, and advantages of my invention will be readily understood. It will be seen that my new and improved saddle is simple and strong in construction, is adapted to any walkingbeam, and is exceedingly efficient in its operation. The trough may be denominated the oil-trough, as it is filled with oil, in which the roller works. Itwill be seen that the walking-beam has a very long and strong bearing or pivotal point-,and also works with very little friction, the entire bearing or roller working in oil.

Having thus described myinvention, what I claim, and desire to secure by Letters Patent ot the United States, is

In a saddle for walking-beams, the combination of the ribbed supporting-plates having the openings in their upper ends, the removable oil-trough having the rib onits lower side, and the ribbed flat saddle-plate having the hollow roller extending acrossits lower side, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

DELOS H. BUMPUS.

W'itnesses:

H. BATTZER, NELsoN N. BOOTH. 

